Home / 21,286.59-29,369.34-13,737.30

Finding the Fourth Proportional to 21,286.59, 29,369.34 and 13,737.30

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Solution

The fourth proportional to 21,286.59, 29,369.34 and 13,737.30 is: 18,953.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.59 : 29,369.34 = 13,737.30 : x
  2. Step 2: Convert to fraction form
    21,286.59/29,369.34 = 13,737.30/x
  3. Step 3: Cross multiply
    21,286.59x = 29,369.34 × 13,737.30
  4. Step 4: Simplify right side
    21,286.59x = 403,455,434.38
  5. Step 5: Solve for x
    x = 403,455,434.38/21,286.59
  6. Step 6: Final answer
    x = 18,953.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.